Gazelle 26800 T4 Plus Pop Up Portable Camping Hub Tent, 4-8 person FLASH SALE!

What kind of rain protection does the screened room have besides the rain fly
I own the standard T4 model without the extra room... but apparently there are zip in wall panels included so that you can use the screened room as an additional tent for a sleeping total of up to 8 people.
 
I own the standard T4 model without the extra room... but apparently there are zip in wall panels included so that you can use the screened room as an additional tent for a sleeping total of up to 8 people.

Perfect thx